Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 10ed71561422c0d9…

MALICIOUS

Office (OLE) / .DOC

199.1 KB Created: 2020-09-21 06:43:00 Authoring application: Microsoft Office Word
MD5: 34519d4b8989df93ba7224a5d8c3394f SHA-1: 30f6a129a6f776d204ee1a244671906a44ac0b85 SHA-256: 10ed71561422c0d9aca0f847cc8b5e7f245f965e77e041136ebce32ed5d9b4c8
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The heuristics indicate the use of CreateObject and GetObject, commonly used to instantiate objects for executing code or downloading payloads. The ClamAV detection further confirms its malicious nature as a downloader. No specific family could be identified, but the technique strongly suggests a spearphishing attachment.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764468-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764468-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7169cbbf5de322d778ca9a77dc58bcf8bb22a6f6d4bfec64dbfa06bc63509b99		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19229 bytes

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